Update //third_party/protobuf to version 3.

third_party/protobuf/objectivec/Tests/GPBARCUnittestProtos.m

Index: third_party/protobuf/objectivec/Tests/GPBARCUnittestProtos.m
diff --git a/third_party/protobuf/python/google/protobuf/internal/more_extensions_dynamic.proto b/third_party/protobuf/objectivec/Tests/GPBARCUnittestProtos.m
similarity index 55%
copy from third_party/protobuf/python/google/protobuf/internal/more_extensions_dynamic.proto
copy to third_party/protobuf/objectivec/Tests/GPBARCUnittestProtos.m
index df98ac4bd1929fda636c9e2fce1a9184ebf5d472..d0408869b13bcc388e195e4a4e23dbfd0d19a048 100644
--- a/third_party/protobuf/python/google/protobuf/internal/more_extensions_dynamic.proto
+++ b/third_party/protobuf/objectivec/Tests/GPBARCUnittestProtos.m
@@ -1,6 +1,10 @@
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 // Protocol Buffers - Google's data interchange format
 // Copyright 2008 Google Inc.  All rights reserved.
-// http://code.google.com/p/protobuf/
+// https://developers.google.com/protocol-buffers/
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
@@ -28,22 +32,25 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Author: jasonh@google.com (Jason Hsueh)
-//
-// This file is used to test a corner case in the CPP implementation where the
-// generated C++ type is available for the extendee, but the extension is
-// defined in a file whose C++ type is not in the binary.
-
-
-import "google/protobuf/internal/more_extensions.proto";
-
-package google.protobuf.internal;
-
-message DynamicMessageType {
-  optional int32 a = 1;
-}
+// Makes sure all the generated headers compile with ARC on.
 
-extend ExtendedMessage {
-  optional int32 dynamic_int32_extension = 100;
-  optional DynamicMessageType dynamic_message_extension = 101;
-}
+#import "google/protobuf/Unittest.pbobjc.h"
+#import "google/protobuf/UnittestCustomOptions.pbobjc.h"
+#import "google/protobuf/UnittestCycle.pbobjc.h"
+#import "google/protobuf/UnittestDropUnknownFields.pbobjc.h"
+#import "google/protobuf/UnittestEmbedOptimizeFor.pbobjc.h"
+#import "google/protobuf/UnittestEmpty.pbobjc.h"
+#import "google/protobuf/UnittestEnormousDescriptor.pbobjc.h"
+#import "google/protobuf/UnittestImport.pbobjc.h"
+#import "google/protobuf/UnittestImportLite.pbobjc.h"
+#import "google/protobuf/UnittestImportPublic.pbobjc.h"
+#import "google/protobuf/UnittestImportPublicLite.pbobjc.h"
+#import "google/protobuf/UnittestLite.pbobjc.h"
+#import "google/protobuf/UnittestMset.pbobjc.h"
+#import "google/protobuf/UnittestNoGenericServices.pbobjc.h"
+#import "google/protobuf/UnittestObjc.pbobjc.h"
+#import "google/protobuf/UnittestObjcStartup.pbobjc.h"
+#import "google/protobuf/UnittestOptimizeFor.pbobjc.h"
+#import "google/protobuf/UnittestPreserveUnknownEnum.pbobjc.h"
+#import "google/protobuf/UnittestRuntimeProto2.pbobjc.h"
+#import "google/protobuf/UnittestRuntimeProto3.pbobjc.h"